Like in a dc dynamo where permanent magnets are used, do they eventually get demagnetized?
Or is magnetism like gravity, and never gets drained?
In: Physics
Magnets don’t get used up but they can lose their magnetism. Imagine a big magnet as millions of smaller magnets all facing the same direction. If you mess up their allignment the magnet loses its strenght…BUT as soon as you reallign them he regains it. Thats why you can remagnetize steel.
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